2) The color editor for trees seems a bit funky on the Mac. The colors don't quite come out the way that you would expect. I can't really describe it, so here is a screenshot. (It is a .bmp, thus rather large. I did not feel like converting it to something else, so I did not post it inline)
UPDATE: the labels seem to be wrong. What is labelled 'Red' controls alpha, 'Green' controls blue, 'Blue' controls green, and 'Alpha' controls red. It should be RGBA, but is ABGR.